Passive obesity The epidemic of passive obesity is a normal response of our

Passive obesity the epidemic of passive obesity is a

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Passive obesity “The epidemic of ‘passive obesity’ is a normal response of our innate biology when confronted with modern living in ‘obesogenic’ environments so everyone, except the genetically very resistant, are guaranteed to put on weight except in unusual social circumstances” -Foresight report (2007). Tackling obesity: future choices
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Small errors in energy balance and biological maintenance An average discrepancy of 10-20 kcal/day between energy intake and energy expenditure = 0.5-1kg of weight gain/year in early adult life Biological maintenance of obesity: as weight gain occurs, ‘resetting’ of neuroregulatory system so the extra weight is the new ‘normal’ default weight setting
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Is it all about individual behaviours? Not all individuals are obese even if they live in an obesogenic environment Can energy imbalance be rectified by more physical activity and healthy diets? Is obesity a manifestation of poor will power? Should the individual be responsible entirely?
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Factors influencing behaviour Health Belief Model (Rosenstock et al) A person’s behaviour is a determinant of their health beliefs: threat perception and behavioural evaluation (benefits vs. costs of action) Cues to action e.g. mass media campaign, legislation Self-efficacy
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Achieving lifestyle change: The Three Es model
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Public health approaches to tackling obesity
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Changing Physical Environments Physical changes in design of environment for physical activity involving: play areas safe pedestrian and cycling friendly streets Food availability in shops (especially in deprived areas)
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Economic measures
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